Glad you found it interesting. I enjoy to dig into this kind of analysis stuff from time to time:

A while ago I made an HTML study on around 8 million web pages: https://www.advancedwebranking.com/html/

Also, I wrote about this journey on CSS-Tricks: 1. https://css-tricks.com/average-web-page-data-analyzing-8-mil... 2. https://css-tricks.com/random-interesting-facts-htmlsvg-usag...

On accessibility, I'd have loved to try out some screen readers but at the moment I write this article, I thought this accessibility analysis would deserve its own separate topic/article. A11Y is always hard.

https://catalin.red/thoughts-on-accessibility/

Sorry for all these plugs.